Recent content by AlexF

F-Class rules answers: no muzzle brakes allowed complete rifle weight limit is around 18lbs What works in F-Class open (in Canada) In Canada at least, anything less an 284Win, 6.5x55 AI or a 7mm magnum (7WSM or a wildcat) simply can't win in F-Class Open. The 6mm BR and 6.5-284 are the best...

The problem is not the number of shot during a match (often 3 x (15 shots + 2 sighters in 17 minutes)) but the fact that I often shot 75 rounds in 1 day and that even at a slow fire rate the barrel gets really hot after 5 shots! Remember that 270WSM accurate, 1/2 MOA or better at long range...

I checked that in 1-10" 2900fps the 165gr VLD was adequately stable over 15C (59F) at 0ft above sea level. This means that I can't use it for moose hunting in my part North East Canada at this time of the year. (Stability depends on air density which is a function of altitude and temperature -...

I tested 2 loads: These loads correspond to Nosler Partion 160gr starting loads minus 3 gr of powder. startind load of 54gr of H4831 starting load of 62gr of Retumbo Work your way up carefully! For the time being, I've abandonned my 270 WSM 165 VLD experiments because of excessive barrel...

I will soon have a new barrel installed on my 270 WSM and would like to know if anyone tried 270 WSM in F-Class competition. What would be the "optimal" configuration: barrel profile, length and twist. I'm planning to shoot Matrix Ballistics 165gr and 175gr Hunting VLDs. I want to be able...

You can start by using Nosler 160gr Partition data and cut the start loads by 3gr to be safe. I reload 270 WSM so can't help you more than that. Alex

Does Retumbo powder = a lot of recoil/muzzle blast? Hi all, I've tried many combinations and am getting great results with 165gr but I also getting massive recoil and muzzle blast with 65gr of Retumbo in a 24" barrel 13.5lbs rifle. I've tried a similar load (case full of Retumbo) in a 20"...

You should use the bullet SD and look at a similar bullet which would be an hypotical 7mm 175 VLD or Matrix's 7mm 190gr VLD. Looking at Berger 7mm (0.277") target bullets: 168 VLD is .316 G7 and 180 VLD is .337 G7 so the 0.277" 165 VLD can be estimated at .326 G7 (or .636 G1). Another way to...

Congradulations for you long range black bear! What was the twist of the rifle used and what load did you use? Alex

Hi all, I sent a private message yesterday and my point was the same as that made by many shooters on this thread: high quality 338 Lapua Mag rifles have good barrel life if quality 250gr match ammo is used. Shoot hot handload or "over-pressure" rounds and even a good barrel will have a short...

Marshal Ambrose from Matrix Ballistics replied that 1-9 twist is the recommended twist for 165gr and 175gr 0.277 Hunting VLDs. The 165gr will stabilize in 1-10 twist under most conditions (sea level and temp over 40F) but the 175 will not. Alex

2.5x greater than what? Sako TRG4 have a garanteed barrel life of 5000 rounds using match factory ammo. Therefore a Sako TRG 42 in 338 Norma Mag would have a 12 500 rounds barrel life... :D I'll buy that, and the Brooklyn Bridge ;) Alex

Re: Faster spin bullets = lower accuracy Good point, it's often mentionned that 55gr FMJ are over-stabilized in 1-7 inch twist and tend to keyhole. I've done some research and found out why!!! It has to do with bullet quality, for high quality bullet stability factor S of 1.4 to 1.7 is...

My shooting buddy is a professional hunting guide up in Northern Quebec and he has seen more failure with Berger hunting bullets in the last years that he has seen from Nosler (Partition) in his entire lifetime. On moose, his Nosler (Partition) record is 28 out fo 30 shoot mooses recovered...

Try Londero Sport (ARC-Inter) in St-Jean-sur-Richelieu, Quebec they have good choice, excellent service and very good prices.